USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Aquatic and Wetland Vascular Plants of the Northern Great Plains

62. Cyperaceae, the Sedge Family

2. Carex L. -- Sedge

52. Carex tenera Dewey


Tufted from short rootstocks; culms slender, sharply trigonous, 3-8 cm long, exceeding the leaves, rough above. Leaves 0.5-3 mm wide; sheaths white-hyaline between the nerves or green-and-white mottled dorsally, white-hyaline ventrally. Spikes bisexual, gynaecandrous, 4-8, ovoid to subglobose, 4-10 mm long, usually loosely arranged in moniliform, flexuous or nodding heads 2.5-5 cm long; bracts reduced, occasionally setaceous and exceeding the spike; pistillate scales acute to subacuminate, slightly shorter than the perigynia. Perigynia stramineous at maturity, plano-convex, ovate, 2.6-4 mm long, ca. 1/2 as wide, strongly several-nerved dorsally, few-nerved ventrally, wing-margined to the base, tapered or contracted to the serrulate, bidentate beak which is 1/3 to 1/2 the length of the entire perigynium; achenes lenticular, 1.2-1.7 mm long; stigmas 2. Jun--Aug. Wet meadows, springs, stream banks, floodplains, moist woods and thickets; frequent in ND, less common s; (Que. and ME to Alta., s to NC, OH, MO, NE and MT).
GIF- Species Photo/Drawing
GIF- Distribution Map

Map key

Carex tenera (from Hermann 1970).  

Previous Section -- Carex sychnocephala Carey
Return to Family -- Cyperaceae - The Sedge Family
Next Section -- Carex tetanica Schkuhr

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/species/cten.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:41:58 EST
Reston, VA [vaww55]